Cosmological Significance of Angular Measurements of Distant Radio Sources

Details Cosmological Significance of Angular Measurements of Distant Radio Sources Cosmological Significance of Angular Measurements of Distant Radio Sources

Mar 1961

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1961natur.189..991d&link_type=abstract

Nature, Volume 189, Issue 4769, pp. 991-992 (1961).

Computer Science

3

Scientific paper

THE programme of interferometric observations of distant radio sources at present being carried out by H. P. Palmer et al. at Jodrell Bank may prove to be of great significance for cosmology. The preliminary results recently published1 indicate that out of 91 sources 38 were of sufficiently small angular diameter to produce measurable interference fringes at the long base line used (32,000 λ at λ = 1.89 m.), and at least 7 had a diameter between half-power points less than 3 sec. of arc. Furthermore, these 7 were described as having ``an extremely high surface brightness which is comparable with that of the intense radio source in Cygnus I.A.U. 19 N4A''.

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